Finding the Fourth Proportional to 123,485.04, 170,346.72 and 78,086.52

Step by Step Solution

1. Step 1: Write the proportion equation
   123,485.04 : 170,346.72 = 78,086.52 : x
2. Step 2: Convert to fraction form
   123,485.04/170,346.72 = 78,086.52/x
3. Step 3: Cross multiply
   123,485.04x = 170,346.72 × 78,086.52
4. Step 4: Simplify right side
   123,485.04x = 13,301,782,558.21
5. Step 5: Solve for x
   x = 13,301,782,558.21/123,485.04
6. Step 6: Final answer
   x = 107,719.79